Reintroduce the old io.opentelemetry.instrumentation.api.incubator.semconv.messaging.MessagingSpanNameExtractor.create and mark it deprecated to give consumers time to migrate

Author: cbos

instrumentation-api-incubator/src/main/java/io/opentelemetry/instrumentation/api/incubator/semconv/messaging/MessagingSpanNameExtractor.java

@@ -12,6 +12,21 @@
 
 public final class MessagingSpanNameExtractor<REQUEST> implements SpanNameExtractor<REQUEST> {
 
+  /**
+   * Returns a {@link SpanNameExtractor} that constructs the span name according to <a
+   * href="https://github.com/open-telemetry/semantic-conventions/blob/main/docs/messaging/messaging-spans.md#span-name">
+   * messaging semantic conventions</a>: {@code <operation name> <destination name>}.
+   *
+   * @see MessagingAttributesGetter#getDestination(Object) used to extract {@code <destination
+   *     name>}.
+   * @see MessageOperation used to extract {@code <operation name>}.
+   */
+  @Deprecated
+  public static <REQUEST> SpanNameExtractor<REQUEST> create(
+      MessagingAttributesGetter<REQUEST, ?> getter, MessageOperation operation) {
+    return new MessagingSpanNameExtractor<>(getter, operation, null);
+  }
+
   /**
    * Returns a {@link SpanNameExtractor} that constructs the span name according to <a
    * href="https://github.com/open-telemetry/semantic-conventions/blob/main/docs/messaging/messaging-spans.md#span-name">
@@ -37,7 +52,7 @@ public static <REQUEST> SpanNameExtractor<REQUEST> create(
   private MessagingSpanNameExtractor(
       MessagingAttributesGetter<REQUEST, ?> getter,
       MessageOperation operation,
-      ServerAttributesGetter<REQUEST> serverAttributesGetter) {
+      @Nullable ServerAttributesGetter<REQUEST> serverAttributesGetter) {
     this.getter = getter;
     this.serverAttributesGetter = serverAttributesGetter;
     this.operation = operation;
@@ -76,7 +91,8 @@ private String getDestination(REQUEST request) {
     } else if (getter.getDestination(request) != null) {
       destination = getter.getDestination(request);
     } else {
-      if (serverAttributesGetter.getServerAddress(request) != null
+      if (serverAttributesGetter != null
+          && serverAttributesGetter.getServerAddress(request) != null
           && serverAttributesGetter.getServerPort(request) != null) {
         destination =
             serverAttributesGetter.getServerAddress(request)